js 回车调用后台事件

 

最近在项目开发做了一个小功能，回车调用后台事件，现在拿出来跟大家分享一下：
前台代码：

    <script type="text/javascript">
        //为TextBox指定回车时执行的Button按钮事件
        function enterPressExecuteButtonAction(textBoxID, buttonID) {
            if (event.keyCode == 13) {
                //获取按钮事件
                var func = document.getElementById(buttonID).click;
                document.getElementById(buttonID).focus();
                func();//调用事件
                event.returnValue = false;              
            }
        }
        //为TextBox屏蔽回车事件
        function EnterEventsAction() {
            if (event.keyCode == 13) {
                event.keyCode = 0;
                event.returnValue = false;
            }
        }
 
</script>

        <asp:TextBox ID="TextBox1" runat="server" onload="TextBox1_Load" ></asp:TextBox>
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button"  />
后台代码：

        //按钮事件
        protected void Button1_Click(object sender, EventArgs e)
        {
            Response.Write("ni hao 123");
        } 
        //加载事件
        protected void TextBox1_Load(object sender, EventArgs e)
        {//调用了TextBox扩展方法
            TextBox1.RegisterPressEnterAction(this.Button1,ButtonType.Button);
        }

还有一个TextBox扩展方法类

 public static class TextBoxExtension
    {
        /// <summary>
        /// 为TextBox指定回车时执行的按钮事件
        /// </summary>
        public static void RegisterPressEnterAction(this TextBox textBox, WebControl button, ButtonType buttonType)
        {
            switch (buttonType)
            {
                case ButtonType.Button:
                    textBox.Attributes.Add("onkeypress", String.Format("enterPressExecuteButtonAction(this.id,'{0}');", button.ClientID));
                    break;
                case ButtonType.Image:
                    break;
                case ButtonType.Link:
                    textBox.Attributes.Add("onkeypress", String.Format("enterPressExecuteLinkButtonAction(this.id,'{0}');", button.ClientID));
                    break;
                default:
                    break;
            }
            textBox.Attributes.Add("onfocus", "javascript:this.select();");
        }
        public static void RegisterPressEnterAction(this TextBox textBox, string button, string buttonType)
        {
            switch (buttonType)
            {
                case "Button":
                    textBox.Attributes.Add("onkeypress", String.Format("enterPressExecuteButtonAction(this.id,'{0}');", button));
                    break;
                case "Image":
                    break;
                case "Link":
                    textBox.Attributes.Add("onkeypress", String.Format("enterPressExecuteLinkButtonAction(this.id,'{0}');", button));
                    break;
                default:
                    break;
            }
            textBox.Attributes.Add("onfocus", "javascript:this.select();");
        }
        /// <summary>
        /// 为TextBox指定回车时执行的按钮事件
        /// </summary>
        public static void RegisterPressEnterAction(this TextBox textBox)
        {
            textBox.Attributes.Add("onkeypress", "EnterEventsAction();");
            textBox.Attributes.Add("onfocus", "javascript:this.select();");
        }
    }